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Date:   Tue, 15 Dec 2020 15:08:20 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     syzbot <syzbot+e87ebe0f7913f71f2ea5@...kaller.appspotmail.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: WARNING in yurex_write/usb_submit_urb

On Mon, Dec 14, 2020 at 4:16 PM Johan Hovold <johan@...nel.org> wrote:
>
> On Mon, Dec 14, 2020 at 04:06:49PM +0100, Andrey Konovalov wrote:
> > On Mon, Dec 14, 2020 at 4:02 PM Johan Hovold <johan@...nel.org> wrote:
> > >
> > > On Mon, Dec 14, 2020 at 06:48:03AM -0800, syzbot wrote:
> > > > Hello,
> > > >
> > > > syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> > > > WARNING in yurex_write/usb_submit_urb
> > >
> > > It appears syzbot never tested the patch from the thread. Probably using
> > > it's mail interface incorrectly, I don't know and I don't have time to
> > > investigate. The patch itself is correct.
> >
> > Hi Johan,
> >
> > I wasn't CCed on the testing request, so I can't say what exactly was wrong.
>
> Here's the patch and the "syz test" command in a reply:
>
>         https://lore.kernel.org/r/20201214104444.28386-1-johan@kernel.org
>
> Probably needs to go in the same mail, right?

Yes, both the syz test command and the patch must be in the same
email, which is sent as a response to the initial report.

> How about including the command needed to test a patch in the syzbot
> report mail to assist the casual user of its interfaces? I had to browse
> the web page you link to and still got it wrong apparently.

I think it's deliberately not included to not overload the report
email with too many details.

> > Could you send me the patch you were trying to test?
>
> Does this work better:
>
> #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing

This worked :)

Thanks!

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